Preparation method of emergency microgel particle material for quickly stopping leakage and water

Abstract

The invention belongs to the technical field of high polymer materials, and provides a preparation method of an emergency microgel particle material for rapid leaking stoppage and waterstop, and the preparation method comprises the following steps: S1, preparing a temperature-sensitive polymer A; s2, dissolving the temperature-sensitive polymer A in a mixed solvent composed of deionized water and ethanol to obtain a first component; s3, dissolving fibers and a curing agent in a mixed solvent composed of ethanol, n-butyl alcohol and water to obtain a second component; s4, water-borne epoxy resin B is dissolved in a mixed solvent composed of deionized water and ethyl alcohol, and a third component is obtained; s5, the first component, the second component and the third component are put into a grinding machine, steel balls are added for grinding, and the emergency microgel particle material is obtained; the emergency microgel particle material prepared by the method disclosed by the invention is rapidly expanded to form gel after encountering water, and the gel fills the whole crack, so that rapid plugging of the crack is realized to stop water, and safety accidents caused by water leakage are avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of polymer materials, in particular to a method for preparing an emergency microgel particle material for rapid leak plugging and water stopping. Background Art

[0002] With the rapid development of economy and the rapid progress of urban construction, some underground buildings such as tunnels, subways, basements, etc. are facing increasingly higher waterproofing requirements. In underground projects, water leakage is a very common phenomenon, which can cause problems such as moisture, corrosion and erosion in underground buildings. In areas with high groundwater content and in areas with high surface water content, surface water and groundwater can often penetrate into underground buildings through various gaps, cracks or holes, so anti-seepage measures are an important construction and maintenance link for underground buildings.

[0003] However, due to the particularity of underground buildings, various cracks and holes that cause water leakage will inevitably appear during the construction process. In addition, cracks and holes will also appear due to various reasons during the use of the buildings, which requires leak plugging personnel to perform repair and plugging operations. However, due to the complex water leakage in the underground construction and maintenance environments, it is sometimes difficult to perform conventional drilling and chemical grouting plugging, and due to the difficult environment, the cost is high.

[0004] To this end, those skilled in the art have proposed a method for preparing an emergency microgel particle material for rapid leak plugging and water stopping to solve the problems raised by the background technology. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a method for preparing an emergency microgel particle material for rapid leak plugging and water stopping, so as to solve the problem in the prior art that due to the complexity of water leakage in underground construction and maintenance environments, it is sometimes difficult to carry out conventional drilling chemical grouting to plug leaks, and the cost is high due to the difficult environment.

[0006] A method for preparing an emergency microgel particle material for rapid leak plugging and water stopping, comprising: S1: preparing a temperature-sensitive polymer A;

[0007] S11: dissolving acrylic acid, acrylamide, polyethylene glycol monomethyl ether methacrylate, N,N-methylenebisacrylamide and dibenzoyl peroxide in xylene at 70-80° C.;

[0008] S12: adding distilled water dropwise to the xylene solution, and reacting for 2 to 4 hours after the distilled water is added, to obtain a first polymer;

[0009] S13: adding the first polymer dropwise into deionized water, and adding a crosslinking agent dropwise;

[0010] S14: After the cross-linking agent is added dropwise, 2-hydroxyethylaminopropanesulfonic acid is added and reacted for 6 to 24 hours to obtain a thermosensitive polymer A;

[0011] S2: dissolving the thermosensitive polymer A in a mixed solvent consisting of deionized water and ethanol to obtain a first component;

[0012] S3: dissolving the fiber and the curing agent in a mixed solvent consisting of ethanol, n-butanol and water to obtain a second component;

[0013] S4: dissolving the waterborne epoxy resin B in a mixed solvent consisting of deionized water and ethanol to obtain a third component;

[0014] S5: Put the first component, the second component and the third component into a grinder, add steel beads and grind them to obtain emergency microgel particle materials.

[0015] Preferably, in the preparation process of the thermosensitive polymer A, the mass ratio of acrylic acid, acrylamide, polyethylene glycol monomethyl ether methacrylate, N,N-methylenebisacrylamide and dibenzoyl peroxide is 15:(3-4):(2-3):2.0:1.0.

[0016] Preferably, during the preparation of the thermosensitive polymer A, the time for dripping distilled water is controlled to be more than 20 minutes, and the time interval for dripping distilled water is controlled to be within 1 minute.

[0017] Preferably, during the preparation of the thermosensitive polymer A, the time for dripping the crosslinking agent is controlled to be more than 15 minutes, and the time interval for dripping the crosslinking agent is controlled to be within 1 minute.

[0018] Preferably, the thermosensitive polymer A comprises, by mass percentage, 50-52% acrylic acid, 10-12% acrylamide, 6-8% polyethylene glycol monomethyl ether methacrylate, 4-6% N,N-methylenebisacrylamide, 5-6% dibenzoyl peroxide, 5% crosslinking agent and 10% 2-hydroxyethylaminopropanesulfonic acid.

[0019] Preferably, the waterborne epoxy resin B is one or a mixture of bisphenol A epoxy resin, epoxidized hydrogenated bisphenol A epoxy resin, brominated epoxy, methyl hydrogenated bisphenol A epoxy resin, glycidyl ether epoxy resin, glycidyl ester epoxy resin, and glycidyl amine epoxy resin.

[0020] Preferably, the first component, the second component and the third component include, by mass percentage, 20% to 30% of the temperature-sensitive polymer A, 60% to 70% of the water-based epoxy resin B, 1% to 2% of the curing agent and 5% to 10% of the fiber.

[0021] Preferably, in the mixed solvent consisting of ethanol, n-butanol and water, the mass ratio of ethanol, n-butanol and water is 1:(1.5-2.5):20.

[0022] Preferably, in the mixed solvent consisting of deionized water and ethanol, the mass ratio of deionized water to ethanol is 1:(1.5-2.5).

[0023] Preferably, the fiber is polypropylene fiber, and the curing agent is acidic fatty amine.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention prepares a thermosensitive polymer A by adopting an inverse emulsion polymerization method, thereby achieving the rapid setting performance and temperature-sensitive characteristics of the thermosensitive polymer A. When the thermosensitive polymer A is blended with a water-based epoxy resin B and fiber, a curing agent and grinding are added, an emergency microgel particle material with excellent temperature sensitivity, rapid setting, plastic sealing and mechanical properties is prepared. The emergency microgel particle material rapidly expands to form a gel and fills the entire crack after encountering water, thereby achieving rapid sealing of the crack and stopping water, thereby solving safety accidents caused by water leakage.

[0026] 2. The present invention utilizes the increase in expansion space after the expansion of the thermosensitive polymer A and the hydrogel, thereby squeezing the epoxy resin out of the cracks. The gel material formed by the emergency microgel particle material after contacting water has good sealing properties, thereby further enhancing its sealing effect.

[0027] 3. The raw materials used for the emergency microgel particle material in the present invention are easily available, such as temperature-sensitive polymer A and water-based epoxy resin B, acrylamide, polyethylene glycol monomethyl ether methacrylate, N,N-methylenebisacrylamide, dibenzoyl peroxide, crosslinking agent, fiber, etc. The preparation method of the emergency microgel particle material is simple and feasible, and can be quickly prepared indoors and outdoors. The raw materials are all safe and non-toxic materials, and have extremely high promotion and operability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The present invention is a preparation flow chart of a method for preparing an emergency microgel particle material for rapid leak plugging and water stopping;

[0029] Figure 2 The present invention is a flow chart of the preparation of a thermosensitive polymer A in a method for preparing an emergency microgel particle material for rapid leak plugging and water stopping. DETAILED DESCRIPTION

[0030] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0031] Embodiment 1

[0032] As attached Figure 1 As shown, the present invention provides a method for preparing an emergency microgel particle material for rapid leak plugging and water stopping, comprising: S1: preparing a temperature-sensitive polymer A;

[0033] S11: dissolving acrylic acid, acrylamide, polyethylene glycol monomethyl ether methacrylate, N,N-methylenebisacrylamide and dibenzoyl peroxide in xylene at 70-80° C., wherein the mass ratio of acrylic acid to xylene is 15:(20-30);

[0034] S12: adding distilled water dropwise to the xylene solution, and reacting for 2 to 4 hours after the distilled water is added, to obtain a first polymer;

[0035] S13: adding the first polymer dropwise into deionized water, and adding a crosslinking agent dropwise;

[0036] S14: After the cross-linking agent is added dropwise, 2-hydroxyethylaminopropanesulfonic acid is added and reacted for 6 to 24 hours to obtain a thermosensitive polymer A;

[0037] S2: dissolving the thermosensitive polymer A in a mixed solvent consisting of deionized water and ethanol to obtain a first component, wherein the mass ratio of the thermosensitive polymer A to the mixed solvent consisting of deionized water and ethanol is 1:(10-20);

[0038] S3: dissolving the fiber and the curing agent in a mixed solvent consisting of ethanol, n-butanol and water to obtain a second component, wherein the mass ratio of the fiber, the curing agent and the mixed solvent consisting of ethanol, n-butanol and water is 5:(1.0-1.5):20;

[0039] S4: dissolving water-based epoxy resin B in a mixed solvent consisting of deionized water and ethanol to obtain a third component, wherein the mass ratio of the water-based epoxy resin to the mixed solvent consisting of deionized water and ethanol is 1:(10-20);

[0040] S5: Put the first component, the second component and the third component into a grinder, add steel beads for grinding, and obtain an emergency microgel particle material, wherein the mass ratio of the steel beads to the mixed liquid is 30:1, and the grinding time is 0.5h. The ground slurry is sieved to obtain an emergency microgel particle material, and the water content of the emergency microgel particle material is 50-55%.

[0041] As can be seen from the above, acrylic acid, acrylamide, polyethylene glycol monomethyl ether methacrylate, N, N-methylenebisacrylamide and dibenzoyl peroxide are added to xylene, and the storage container is heated to 70-80°C to completely dissolve the materials in xylene. At the same time, distilled water is prepared in a ratio of 2.5:1 by mass of distilled water to acrylic acid, and then the distilled water is added to the mixed solution in a dropwise manner within 20-40 minutes. After the distilled water is added, the reaction is continued for 2-4 hours to obtain the first polymer. During the reaction, the mixed solution is The liquid is stirred at a speed of 600 to 1000 r / min; the first polymer is added dropwise into deionized water while stirring until the first polymer is completely dissolved, and stirring is continued after the addition is completed at a speed of 1000 to 2000 r / min. A cross-linking agent is added dropwise at the same time, and stirring is continued after the addition of the cross-linking agent is completed. 2-hydroxyethylaminopropanesulfonic acid is added at the same time at a stirring speed of 600 to 1000 r / min, and the reaction is stirred for 6 to 24 hours. After the reaction is completed, the mixed solution is filtered, washed, and dried to obtain a thermosensitive polymer A.

[0042] The thermosensitive polymer A and a mixed solvent consisting of deionized water and ethanol are mixed in a mass ratio of 1: (10-20), and the thermosensitive polymer A is dissolved in the mixed solvent consisting of deionized water and ethanol to obtain a first component.

[0043] The fiber, the curing agent, and a mixed solvent consisting of ethanol, n-butanol and water are mixed in a mass ratio of 5: (1.0-1.5): 20, and the fiber and the curing agent are dissolved in the mixed solvent consisting of ethanol, n-butanol and water to obtain a second component.

[0044] The water-based epoxy resin and the mixed solvent consisting of deionized water and ethanol are mixed in a mass ratio of 1: (10-20), and the water-based epoxy resin B is dissolved in the mixed solvent consisting of deionized water and ethanol to obtain a third component.

[0045] The first component, the second component and the third component are placed in a grinder and steel beads are added for grinding, wherein the mass ratio of the steel beads to the mixed liquid is 30:1, the grinding time is 0.5 h, and the ground slurry is sieved to obtain an emergency microgel particle material.

[0046] Embodiment 2

[0047] As attached Figure 1As shown, this embodiment is basically the same as the previous embodiment, except that, in the preparation process of the thermosensitive polymer A, the mass ratio of acrylic acid, acrylamide, polyethylene glycol monomethyl ether methacrylate, N,N-methylenebisacrylamide and dibenzoyl peroxide is 15:(3-4):(2-3):2.0:1.0. By precisely controlling the mass ratio of acrylic acid, acrylamide, polyethylene glycol monomethyl ether methacrylate, N,N-methylenebisacrylamide and dibenzoyl peroxide, a thermosensitive polymer A with more stable performance and stronger water absorption can be prepared.

[0048] Specifically, during the preparation of the thermosensitive polymer A, the time for dripping distilled water is controlled to be more than 20 minutes, and the time interval for dripping distilled water is controlled to be within 1 minute. The dripping of distilled water is coordinated with the reaction time to promote the formation of the first polymer.

[0049] Furthermore, in the preparation process of the thermosensitive polymer A, the time for adding the cross-linking agent is controlled to be more than 15 minutes, and the time interval for adding the cross-linking agent is controlled to be within 1 minute. The time for adding the cross-linking agent is coordinated with the reaction to promote the curing of the cross-linking agent. By controlling the time and interval for adding distilled water and the cross-linking agent, the reaction process can be more effectively controlled, and the curing efficiency of the first polymer and the cross-linking agent can be improved, thereby obtaining a more uniform and stable thermosensitive polymer A.

[0050] Furthermore, the thermosensitive polymer A comprises, by mass percentage, 50-52% acrylic acid, 10-12% acrylamide, 6-8% polyethylene glycol monomethyl ether methacrylate, 4-6% N,N-methylenebisacrylamide, 5-6% dibenzoyl peroxide, 5% crosslinking agent and 10% 2-hydroxyethylaminopropanesulfonic acid.

[0051] From the above, it can be seen that through the rapid setting performance and temperature-sensitive characteristics of the thermosensitive polymer A, an emergency microgel particle material with excellent temperature sensitivity, rapid setting, plastic sealing and mechanical properties is prepared, which solves the safety accidents caused by water leakage. The gel material formed by the emergency microgel particle material after coming into contact with water has good sealing properties, which further enhances its sealing effect, rapidly expands to fill the entire crack channel and seals it, thereby achieving the function of plugging leakage and stopping water.

[0052] Embodiment 3

[0053] As attached Figure 1 As shown, this embodiment is basically the same as the previous embodiment, except that the water-based epoxy resin B is a mixture of one or more of bisphenol A epoxy resin, epoxidized hydrogenated bisphenol A epoxy resin, brominated epoxy, methyl hydrogenated bisphenol A epoxy resin, glycidyl ether epoxy resin, glycidyl ester epoxy resin, and glycidyl amine epoxy resin.

[0054] Specifically, the first component, the second component and the third component include, by mass percentage, 20% to 30% of the temperature-sensitive polymer A, 60% to 70% of the water-based epoxy resin B, 1% to 2% of the curing agent and 5% to 10% of the fiber.

[0055] Furthermore, in the mixed solvent consisting of ethanol, n-butanol and water, the mass ratio of ethanol, n-butanol and water is 1:(1.5-2.5):20.

[0056] Furthermore, in the mixed solvent consisting of deionized water and ethanol, the mass ratio of deionized water to ethanol is 1:(1.5-2.5).

[0057] Furthermore, the fiber is polypropylene fiber, and the curing agent is acidic fatty amine.

[0058] From the above, it can be seen that the following materials are prepared according to weight: 100 parts of temperature-sensitive superabsorbent polymer, 80-100 parts of water-based epoxy resin, 15-20 parts of curing agent, 20-30 parts of surfactant, 3-5 parts of fiber, and 30-100 parts of water.

[0059] Add 120 g of acrylic acid, 50 g of acrylamide, 7.5 g of N,N-methylenebisacrylamide, 3 g of ethylene glycol dimethacrylate, 0.75 g of potassium persulfate, and 100 ml of deionized water into a round-bottom flask, stir for 1 hour, then pass nitrogen, and control the temperature to react at 80°C for 30 minutes. Then pour the reaction solution into a 5% aqueous solution of sodium dodecyl sulfate preheated to 40°C, heat to 80°C and mature for 1 hour, wash with ethanol until neutral, and finally dry the obtained polymerized microspheres in vacuum at 40°C for 24 hours to obtain prepolymerized microspheres.

[0060] The prepolymerized microspheres were placed in a round-bottom flask filled with methanol, 50 g of crosslinking agent N, N-dicyclohexylmethane diisocyanate was added, and the mixture was reacted at 40°C for 0.5 h. The mixture was then precipitated in ethyl acetate, washed repeatedly with methanol, and finally dried in vacuum at 80°C for 24 h to obtain crosslinked microspheres, i.e., thermosensitive polymers.

[0061] The thermosensitive polymer and the auxiliary agent are stirred and mixed, water is added to prepare a thermosensitive polymer solution, the water-based epoxy resin and the water-based curing agent are stirred and mixed, and then mixed with the thermosensitive polymer solution, and the fiber is added and stirred to prepare an emergency microgel particle material. The specific process includes: first, 80g of water-based epoxy resin, 15g of water-based curing agent, and 60g of ethyl acetate are added into a closed container and stirred and mixed, and the mixture is fully dissolved and mixed for use; 100g of thermosensitive acrylic polymer, 20g of hexadecyltrimethylammonium bromide, etc. are added into deionized water and stirred and mixed to form a polymerization solution, and the mixture is fully dissolved and mixed for use; 60g of ethyl acetate and 3g of polyurethane short fiber are added into the polymerization solution and stirred and mixed, and then the prepared mixed solution is added into the resin solution and stirred and mixed, the stirring speed is 1000r / min, the stirring time is 30min, and the mixture is evenly mixed to prepare the emergency microgel particle material required by the present invention.

[0062] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and deform the above embodiments within the scope of the present invention.

[0063] The standard parts used in the present invention can all be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0064] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0065] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0067] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0068] In the drawings of the embodiments disclosed in the present invention, only the structures involved in the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0069] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing an emergency microgel particle material for rapid leak plugging and water stopping, characterized in that: include, S1: Preparation of thermosensitive polymer A; S11: dissolving acrylic acid, acrylamide, polyethylene glycol monomethyl ether methacrylate, N,N-methylenebisacrylamide and dibenzoyl peroxide in xylene at 70-80° C.; S12: adding distilled water dropwise to the xylene solution, and reacting for 2 to 4 hours after the distilled water is added, to obtain a first polymer; S13: adding the first polymer dropwise into deionized water, and adding a crosslinking agent dropwise; S14: After the cross-linking agent is added dropwise, 2-hydroxyethylaminopropanesulfonic acid is added and reacted for 6 to 24 hours to obtain a thermosensitive polymer A; S2: dissolving the thermosensitive polymer A in a mixed solvent consisting of deionized water and ethanol to obtain a first component; S3: dissolving the fiber and the curing agent in a mixed solvent consisting of ethanol, n-butanol and water to obtain a second component; S4: dissolving the waterborne epoxy resin B in a mixed solvent consisting of deionized water and ethanol to obtain a third component; S5: Put the first component, the second component and the third component into a grinder, add steel beads and grind them to obtain emergency microgel particle materials.

2. A method for preparing an emergency microgel particle material for rapid leak plugging and water stopping as claimed in claim 1, characterized in that: During the preparation of the thermosensitive polymer A, the mass ratio of acrylic acid, acrylamide, polyethylene glycol monomethyl ether methacrylate, N,N-methylenebisacrylamide and dibenzoyl peroxide is 15:(3-4):(2-3):2.0:1.

0.

3. A method for preparing an emergency microgel particle material for rapid leak plugging and water stopping as claimed in claim 2, characterized in that: During the preparation of the thermosensitive polymer A, the time for dripping distilled water is controlled to be more than 20 minutes, and the time interval for dripping distilled water is controlled to be within 1 minute.

4. A method for preparing an emergency microgel particle material for rapid leak plugging and water stopping as claimed in claim 3, characterized in that: During the preparation of the thermosensitive polymer A, the time for dripping the crosslinking agent is controlled to be more than 15 minutes, and the time interval for dripping the crosslinking agent is controlled to be within 1 minute.

5. The method for preparing an emergency microgel particle material for rapid leak plugging and water stopping as claimed in claim 4, characterized in that: The temperature-sensitive polymer A comprises, by mass percentage, 50-52% of acrylic acid, 10-12% of acrylamide, 6-8% of polyethylene glycol monomethyl ether methacrylate, 4-6% of N,N-methylenebisacrylamide, 5-6% of dibenzoyl peroxide, 5% of a crosslinking agent and 10% of 2-hydroxyethylaminopropanesulfonic acid.

6. A method for preparing an emergency microgel particle material for rapid leak plugging and water stopping as claimed in claim 5, characterized in that: The waterborne epoxy resin B is one or a mixture of bisphenol A epoxy resin, epoxidized hydrogenated bisphenol A epoxy resin, brominated epoxy, methyl hydrogenated bisphenol A epoxy resin, glycidyl ether epoxy resin, glycidyl ester epoxy resin, and glycidyl amine epoxy resin.

7. A method for preparing an emergency microgel particle material for rapid leak plugging and water stopping as claimed in claim 6, characterized in that: The first component, the second component and the third component include, by mass percentage, 20% to 30% of a temperature-sensitive polymer A, 60% to 70% of a water-based epoxy resin B, 1% to 2% of a curing agent and 5% to 10% of fibers.

8. A method for preparing an emergency microgel particle material for rapid leak plugging and water stopping as claimed in claim 7, characterized in that: In the mixed solvent consisting of ethanol, n-butanol and water, the mass ratio of ethanol, n-butanol and water is 1:(1.5-2.5):

20.

9. A method for preparing an emergency microgel particle material for rapid leak plugging and water stopping as claimed in claim 8, characterized in that: In the mixed solvent composed of deionized water and ethanol, the mass ratio of deionized water to ethanol is 1:(1.5-2.5).

10. A method for preparing an emergency microgel particle material for rapid leak plugging and water stopping as claimed in claim 9, characterized in that: The fiber is polypropylene fiber, and the curing agent is acidic fatty amine.

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